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You mentioned the other day that you are using an indoor loop. Fifteen to twenty years ago I used indoor loops for LF/MF with no problems, a Wellbrook loft mounted on a rotator and a Palomar tuned

Hello Joni, Have you tried another keyboard? I spent much of my work life with EMI problems and FCC part 15 compliance. (Retired now) FCC part 15 only says it will not interfere with NORMAL home

Unplugging it isn't necessarily tragic. You could replace it with an old school PS/2 keyboard (most desktop computers still have a port for those that can accept either a keyboard or a mouse), a

...other than unplugging it!? My USB keyboard is causing quite a lot of interference to the Softrock.? I have tried different USB ports, but still have noise.? I also used a couple of snap closed

Hi John, Well, I have a lot of things going on at the moment.? I'm using an indoor loop which has a preamp, two peaking controls that I can control remotely, and also a relay for switching to lower

Hi Jon, I continue to build LF RX II receiver boards and would be happy to convert one of your HF RX II receiver boards to a LF receiver for a small charge. If interested send me an email to

Jon, As you are having a lot of USB related problems, that's making me think it could be the power supply for the USB circuits in your PC. I suggest you get a powered USB hub and plug everything

Jon, You will not believe me but it is really easy. Solder with any iron, use solder wick if you make bridges. I've never damaged a component by clumsy soldering. 73 Alan G4ZFQ

Shucks, as that looks like a surface mount device (U12), I won't be doing the conversion after all.? Thanks for the info though. Jon

Jon, The details are in the link you sent. I see it on the schematic. U12 is required, the wire link not. 73 Alan G4ZFQ

Hi Alan, I can't find anything regarding the extra IC and link.? Could you please share a link for this? Sorry for my ignorance.? These were Tony builds, so I never did any of this myself.? I

Jon, Add the extra IC and link. The capacitors are ceramic as illustrated on Robby's page. (Personally I find it easier to replace SM capacitors but none of those are.) 73 Alan G4ZFQ

Since I have the extra HF, I am considering changing out components to get LF.? I am looking at his page: http://www.wb5rvz.org/ensemble_rx_ii/index?projectId=16 Is all that would be required

Jon, You seem to have an exceptional amount of interference problems. I wonder if you have ground loop problems. Here is a logical way of checking connections

Hi Alan, Yes, I am suspecting the amplifier inside the tiny speaker volume control.? Needless to say, I won't be using it anymore. Today has been an interference tracking day.? Another source is

Jon As it occurs with both power feeds I wonder if it is the speaker amplifier? There are cheap class D amps around that may well radiate the switching frequency + harmonics. I've not done any

Thanks, Shirley.? As I tune HF, I find that sometimes the interference isn't completely gone, but then again I still have a USB keyboard and other USB devices plugged in.? The USB keyboard is known

Cheap USB speakers are likely moving data on the USB bus at 12 Mbps, the speed of full speed USB. Really cheap ones might be using low speed, 1.5 Mbps; that has enough bandwidth for mono but would be

I finally figured out the source of my interference- my USB powered speakers!? Never thought it would be those, so never checked them. However, no matter if I plug in on the desktop USB or the little

Hi Rob, Thanks, but unfortunately none of the QtRadio versions are working on my Win desktop.? They either just stall or I get errors at start up.? Tried to remedy by selecting different configs